If you aren't happy with the way your dealership website is performing in terms of search engine results (and you aren't violating Google's webmaster guidelines), you can ask Google to "reconsider" your site.  Essentially, you can ask Google to take a look at your site to see if it was manually marked as spam.

Over the years, Google has improved this process to make it more transparent.  After submitting a site, Google will let the webmaster know that they received the request and when the request is processed.

Now, if your website has been found to be affected by a manual spam action, Google will let you know and whether or not they are able to revoke that action.  They will also let the webmaster know if the site is in violation of their guidelines.  If your website isn't ranking poorly due to either of these two issues, Google may let you know.

If you have questions about why your dealership website isn’t ranking as well as you’d like, I suggest talking to your car dealership website provider before submitting your site to Google for review.  They should be able to help you decide if your site just has poor SEO, or if something more serious is going on.  Has anyone ever used this tool from Google?  If so, what were the results?